Study (3802 SARS-CoV-2 test results, 587 positive) reported an association with increasing age, male sex, population density, more deprived areas, and black ethnicity, and increased risk of a positive test. Current smokers had lower odds of a positive test.

SPS commentary:

These findings suggest that risk factors for SARS-CoV-2 infection in this primary care study are similar to those associated with more severe COVID-19 disease. However, further research is needed into the effect of chronic conditions on the risk of infection and disease severity, ethnicity variations, and the risk to smokers.